Mold for casting baths or other vessels.



No. 682,84I. Patented Sept. l7, 19m.

w. w. CHAPMAN.

MOLD FOR CASTING BATHS OR OTHER VESSELS (Application filed/Dee. 27, 1900.)

' (No Model.) 3 Sheets-Sheet I I n FIG.Z.. I F1615.

TENS co. PHoraLn'Ho" WASHINGTON, o. c.

Patented Sept. l7, I901.

No. 682,84I.

w. w. CHAPMAN. MOLD FOB CASTING BATHS OR OTHER VESSELS.

(Application filed Dec. 27, 1900.)

3 Sheets-Sheet 2,

(No Model.)

"m: N'oams PETERS wuynormnuon WASH'NKTTON. nv c.

Patented Sept. 17, I901; w. w. CHAPMAN. I now FOB CASTING BATHS on own: VESSELS.

(Application filed Dec. 27, 1900.)

3 Sheets-Sheet 3.

(No lo del.)

IIIIIIIIIIIIHIIIIIII/ FIG .8;

FIGJO] THE NORRIS PETERS 00.. Pfio'ro-uma. WASHINGTON, n. c,

UNITED STATES PATENT "OFFICE.

WILLIAM WARD CHAPMAN,- OF PRE SOOT, ENGLAND.

MO-LD FOR'CASTING BATHS oR OTHER'VESSELS.

SPECIFICATION forming 3m of Letters Patent No. 682,841, dated September 17, 1901. Ap plicationfiled December 27,1900- Serial No. 41,21Q. (No model.)

To all whom it may concern..-

Be it known that 1, WILLIAM WARD CHAP- MAN, iron-molder, a subject of the Queen of- Great Britain, residing at Prescot, in the vented certain new and useful Improvements in Molds for Casting Baths or other Vessels,

of which the following is aspecification.

In the manufacture of baths the usual plan has been to cast them in sand molds, which,

. however, is a somewhat slow process, as a mold has, to be made for each casting, and a workman atthe quickest rate could hardlyv or other metal suitable for the purpose. The

great rapidity with which zinc and spelterchill and become set caused difficulties hitherto in the use of metal molds. This rapid settingand consequent contraction of the spelter in'a rigid metallic mold would cause 1 the cast metal to crack, because the metallic mold would not give, as a sand mold would,

to the contraction of the cast spelter.

remedy this, I form the core of the mold in sections, which are capable of beingdrawn in or contracted, thereby allowing the casting to contract without being injured at all.

Referring to the accompanying drawings, Figure 1 is an elevation, partly in section, of

a bath-mold in position for pouring in the metal; Figs. 2 and 3, details of Fig. 1, to be,

hereinafter described; Fig. 4, a longitudinal section of Fig. 1, showing the mold in an inverted position Fig. 5, aplan view, partly in section, of aportion of Fig. 4; Fig. 6, a detail of Fig. 5; Fig. 7, a cross-section through Fig.

4.; Fig. 8, a detail'of a portion of Fig. 4; Fig. 9, an enlarged detail View of a portion of Fig. 7; Figs. 10 and 11, an elevation and a plan of a slight modification of part of Fig. 4; Fig. 12, a'plan of the mold. Fig. l3is a detail showing one method of mounting the end pieces upon the standard, hereinafter described.

In the drawings, A is the outer metal casing of the mold, which is supported on trunnions Band is provided with arms or lugs O to receive the sling of the crane for the purpose of turning the mold from the position shown in Fig. t to that shown in Fig. 1.

D is the funnel into whichthe molten metal is poured, and E a handle for holding the funnel in position while filling the mold and for removing it when sufficient metal has been poured in.

F is a sliding valve for closing the aperture when the funnel is removed.

It has been found that the constant impinging of the molten metal on one portion of the inner casing or core G wears it away at this particular place. Now to remedy this I insert a plug H, of metal, which is kept in position by means of a bar or strap I.

(Seen more clearly in Fig. 3, which is an underneath recess in the plug H and to fill such recess 'with charcoal, as shown in Fig. 2, which is a section through the plug and a portion of the core G.

Referring nowv to the core, it will be seen from the drawings thatthe bottom part J is one piece, but the sides and ends are made up of several pieces. In the drawings two separate plates K and L on each side are shown, which plates are bent, so as to form the large end of the .core G, as well as the sides, as shown more clearly in Fig. .5, the small end M being formed, preferably, inone piece and fitting with the side pieces, as shown at N, Fig. 6. not meet at the large end,but a space is left between to be occupied by a plate 0, Fig. 5, which can be withdrawn to allow for the sides contracting. In the arrangementshown the end M of the core and the filling-in piece 0 are slackened or drawn in .by hand at the proper time by means of lever P, working'in a stop-guide P, links Q, sliding blocks R, and rods S, to which latter the end pieces are fixed; but it will be evident that othermeans could be employed, such as hand wheels and screws. The connection, between the rods S and the end pieces may be made by .means of metal straps S, which are riveted to the I rod ends and the end pieces, as shown in Figs.

4and 5, or sockets S may be formed on the plates, into which'the ends of the rods S are The plates K and L do screwed, brazed, or otherwise fixed, as shown in Fig. 13. The sides in this case give automatically to the pressure of the contracting metal. The manner whereby this is done and which is shown in Fig. 7 consists in having a standard Tsituated in the center of the core and supported by fixed vertical spindles U,Fig. 4,passing through it. Hollow bosses T are formed on this standard to receive springs Vand the ends of rods W, which latter bear against the springs, the other ends of such rods being fixed to the side plates K and L. In order to give more support to these rods and to prevent the springs forcing the plates K and L beyond the required distance apart, a frame X, Fig. 5, is provided, resting on the bottom of the core and having holes through which the rods W pass. Further, by having collars Y on the rods bearing against the inside of the frame these collars, while not interfering with the rods being pressed inward against the pressure of the springs, will limit their outward movement.

I do not confine myself to the aforementioned automatic arrangement as, if it were deemed advisable, the sides could be contracted byhand by means of levers 1, as shown by dotted lines in Fig. 7, such levers being fulcrumed to arms 2, fixed to the central standard T, and engaging pins on the rods W. Furthermore, in order to make it impos sible when springs are used for the side sections of the core to yield before a given time I provide vertical screwed spindles 3, mounted in the central standard T, and bars 4, having. pins 5, adapted to enter holes in the rods W. These bars are threaded onto the spindles, and when the pins 5 fixed thereto enter the holes in the rods the latter are locked; but on the hand wheels being rotated the pins are raised out of the holes in the rods W, thereby freeing the same.

As this mold has been designed principally for baths having flanges, I provide for this as follows:

6, Fig. 9, is a loose strip of metal curved in cross-section, as shown, and extending all around the edge of the bath and supported by screws 7, by means of which its height is adjusted between the flange 8 and the outer casing A.

9 represents brackets which support the flange 8 and serve as nuts for the screws 7.

10 is a piece similar to the piece 6 and is also free to be moved vertically by the screw 11.

12 is an angle-iron one flange of which is removablysecured to the flange 8 of the outer casing A, its other flange being attached to a bridge-piece 13. The latter in addition to forming nuts for the screw-pins 11 also serves to connect the angle-iron 12 with a skeleton frame 14, which is attached to the top of the central standard T by nuts screwed on the end of vertical rods U, which pass through the frame 14:.

In order to better support and guide the filling-piece 0, Fig. 5, I may extend the central standard T, as shown in Figs. 10 and 11, and form a recess or slot 15 therein to receive the extended portion 16 of the filling-piece O. Pins 17 pass through elongated holes 18 in the standard T and through the portion 16 of the filling-piece O, the latter being also supported by the rod S, which is operated by the lever P, Fig. 4, in the manner before described.

The adjacent edges of the side plates K and L of the core are preferably sloping, as shown in Fig. 8, with an overlapping strip 18, fixed to the upper plate.

The mode of action is as follows: After screwing up the different parts, so as to make the joints tight, the mold is turned into the position shown in Fig. 1, and the metal is poured into the mold, asuitable air-vent being provided. I assume that it will take at least forty-five seconds for the spelter to chill and become set, and immediately sufficient metal has been poured in the mold is inverted, and the different sections forming the core are freed, so as to give automatically to the pressure exerted by the contracting metal or are drawn in by means of Elevers or otherwise. After casting, the core and its connec tions are raised and the cast article removed. The molds by constant use are kept at a high temperature, and this prevents any sudden chilling of the spelter in casting.

This invention is specially suitable in cases where a large number of castings are wanted of one and the same pattern.

I declare that what I claim is 1. In a mold for casting baths and like ar ticles,the combination of a core built up of sections adapted to yield under the pressure of the article being cast, an outer casing of the shape of the article to be cast, trunnions supporting said casing at each end in such manner that the mold and core can be turned upside down, an aperture in the bottom of said outer casing through which the molten metal can be poured, and a plug H to prevent the excessive wearing away of the core beneath said aperture, substantially as described.

2. In a mold for casting baths and like ar ticles, the combination of an outer casing having the shape of the article to be cast, a core consisting of a bottom formed in one piece, two sides each of which is made up of two or more pieces one above another and extending around to nearly meet at the large end of the core, a removable piece adapted to fill in the space between their nearly-meeting edges, an end piece at the small end of the core, means for drawing back said end piece when required, and. means for expanding or contracting the side pieces, substantially as described.

3. In a mold for casting baths and like articles, the combination of an outer casing A, a core G built up of a plurality of sections, means whereby the sections may be made to yield under pressure; a detached flange 8, surrounding the margin of the casingA 5 supporting-brackets 9, connecting said flange with the casing A; angle-irons 12 connected to the flange 8; an inner skeleton frame 14; bridge-pieces 13 connecting the angle-irons 2 and skeleton frame 14; relatively adj ustable strips 6 and 10 bridging the space between the flange 8 and the casingA and core G respectively; and screws 7 and 11 on which the strips 6 and 10 are respectively mounted turning in fixed nuts in the brackets 9 and bridge-pieces 13 respectively, to efiect the vertical adjustment of the strips 6 and 10, substantially as and for the purposes set forth.

4:. In a mold for casting baths and like articles, the combination of an outer casinghaving the shape of the article to be cast, a core made up of a plurality of sections, a standard provided with bosses, a spring in each such boss, a rod guided in each boss the end of said rod being in contact with said spring, the other end of each rod being rigidly connected to one of the sections of said core,

and means for preventing said rods from forcing back said springs and sliding deeper into said bosses for as long a time as desired, substantially as described.

5. In a mold for casting baths and like articles, the combination of a casing A, a core G built up of sections, a central standard T, rods W connecting said sections of the core to said standard in such manner as to allow said core to yield to the pressure of the article being cast, screwed rods 3 and arms 4 working on said rods, and pins 5 carried by said arms and adapted to engage and hold the rods W, substantially as and for the purpose set forth.

6. In a mold for casting baths and like articles, the combination of a core G built up of sections, a central standard T within said core, rods W connecting said standard to the sections of said core in such manner as to allow said core to yield under the pressure of the article being cast, collars Y on said rods, and a frame X surrounding the standard '1 through which the rods W pass, and against which the collars Y are adapted to bear, substantially as described.

7 In a mold for casting baths and like articles, the combination of an outer casing A, a core Gbuilt up of a plurality of sections, a standard T within said core, rods W connecting the sections of said core to the standards in such manner as to allow said core to yield under the pressure of the article being cast, a frame Xsurrounding the standard T through which frame the rods W connecting the sections of the core to the standard pass, collars 1 X on said rods adapted to bear against said frame, brackets 9 mounted on said-outer casing A, plates 6 adjustably mounted in said brackets, a flange 8 mounted on said brack= ets, an angle iron 12 connected to said flange 8, a bridge-piece 13 connected to said angleiron, a skeleton frame 14. connected to said bridge-piece, and plates 10 adj ustably mount ed on said bridge-piece, substantially as de= scribed. In Witness whereof I have hereunto signed my name, this 8th day of December, 1900, in the presence of two subscribing witnesses.

WILLIAM WARD CHAPMAN.

Witnesses:

G. O. DYMOND, ALBERT C. B. HENRI. 

